I have heard the story line, "If you have high transaction volume, then
you don't want Big Blue IRON." Well my question then is, what is a
transaction? Is this a computation, is this prime number generation, is
this high volume websites, or is this is a large database with a Tbyte of
data running 1000s of SQL statements in a brief moment of time, for
example a web application adding users to a secure way ldap (back-end is
db2)? So what is a transaction? When is a instruction not a transaction
and if everything is in some way a transaction what exactly is Linux on
the MF good for, other than supporting a virtual environment of previously
installed and largely under utilized distributed systems? Would I want to
run 100 systems in a given z/VM each with some number of JVMs, yes
WebSphere? We are talking about putting 6 JVMs onto a single Linux guest.
I am looking forward to this as during our POC (proof of Concept) we
never tested with more than 1 may be 2.
On the topic of availability I am not sure I buy the whole MF is better
than 80x86 or Intel / AMD 64 server hardware. Today, everything is
redundant and everything is hot swapable. What is different is to get a
new stick or replacement stick of memory for the MF could cost you and
automobile and you won't find that stick of memory at the local computer
store.
Thoughts???
Eric Sammons
(804)697-3925
FRIT - Infrastructure Engineering
Phil Howard <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port <[EMAIL PROTECTED]>
10/28/2003 01:14 PM
Please respond to Linux on 390 Port
To: [EMAIL PROTECTED]
cc:
Subject: Re: Perpetuating Myths about the zSeries
On Tue, Oct 28, 2003 at 11:21:23AM -0600, Adam Thornton wrote:
| On Tue, 2003-10-28 at 10:57, Jim Sibley wrote:
| > The speed of the top of the line zSeries has increased
| > at four fold in the last 3-4 years.
|
| I'd be amazed if Intel hasn't done at least this well too.
It probably has. But CPU power isn't the whole story, either. I'd ask
about how fast a machine built around an Intel/AMD CPU can deal with
multiple devices concurrently transferring data for read or write I/O
operations. If you need sheer computation power, zSeries is probably
not right for you (how about PPC?). But if you need a large, high
traffic, high uptime, database, you don't really want the kinds of
machines typically built around Intel CPUs.
--
-----------------------------------------------------------------------------
| Phil Howard KA9WGN | http://linuxhomepage.com/
http://ham.org/ |
| (first name) at ipal.net | http://phil.ipal.org/
http://ka9wgn.ham.org/ |
-----------------------------------------------------------------------------
